What is the new root stock? My Double Delight grafted onto Dr. Huey did start declining gradually in the last few years, but it's been in my garden for more than 30 years. I have another, grafted onto R. fortuniana, and it shows no sign of decline yet, but it has only been here for about 10-12 years. The one on R. fortuniana is easily twice the size of the other -- about 6-7 feet tall and 3-4 feet wide.
